Não informado. (2009). Science, Technology and Innovation. British Library, Science Reference and Information Service.
Citace podle Chicago (17th ed.)Não informado. Science, Technology and Innovation. London: British Library, Science Reference and Information Service, 2009.
Citace podle MLA (8th ed.)Não informado. Science, Technology and Innovation. British Library, Science Reference and Information Service, 2009.
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